Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 42 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/max-1.c b/gcc-4.9/gcc/testsuite/gcc.dg/max-1.c
new file mode 100644
index 000000000..9823dca59
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/max-1.c
@@ -0,0 +1,42 @@
+/* PR middle-end/18548 */
+/* Test case reduced by Andrew Pinski <pinskia@physics.uc.edu> */
+/* { dg-do run } */
+/* { dg-options "-O1 " } */
+/* Option -fno-tree-lrs removed By Andrew MacLeod since it is no longer 
+   supported in the compiler beginning with GCC 4.3.  */
+/* m32c has varying sized pointers */
+/* { dg-skip-if "" { "m32c-*-*" } { "*" } { "-mcpu=m32c" "-mcpu=m32cm" } } */
+
+__extension__ typedef __INTPTR_TYPE__ intptr_t;
+
+extern void abort (void);
+
+intptr_t fff[10];
+
+void f(intptr_t a, intptr_t b)
+{
+  intptr_t crcc = b;
+  intptr_t d = *((intptr_t*)(a+1));
+  int i;
+
+  a = d >= b? d:b;
+
+
+  for(i=0;i<10;i++)
+   fff[i] = a;
+}
+
+/* The variable a cannot be a local variable as we get better aliasing
+   now and decide that the store to a is dead.  The better aliasing comes
+   from better representation of pointer arithmetic. */
+intptr_t a = 10;
+int main(void)
+{
+  int i;
+  f((intptr_t)(&a)-1,0);
+  for(i = 0;i<10;i++)
+   if (fff[i]!=10)
+    abort ();
+  return 0;
+}
+